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# SPDX-License-Identifier: Apache-2.0
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
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import numpy as np


class OgnCountIndices:
    @staticmethod
    def compute(db) -> bool:
        indices = np.array(db.inputs.indices)

        # WAR because omni.replicator.core.distributions don't accept num_samples=0
        if len(indices) != 0:
            db.outputs.count = len(indices)
        else:
            db.outputs.count = 1

        return True
